Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média de voltas para Jackie Stewart?
 ###Tabelas: CREATE TABLE and_neighbouring_islands (and_neighbouring_islands_id AUTO_INCREMENT PRIMARY KEY, Peak VARCHAR, Country VARCHAR, Elevation (m) INT, Prominence (m) INT, Col (m) INT) CREATE TABLE classification (classification_id AUTO_INCREMENT PRIMARY KEY, Driver VARCHAR, Constructor VARCHAR, Laps INT, Time/Retired VARCHAR, Grid INT) CREATE TABLE second_league (second_league_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Match VARCHAR, Points VARCHAR, Draw VARCHAR, Lost VARCHAR) CREATE TABLE monthly_mobile_subscriber_additions (monthly_mobile_subscriber_additions_id AUTO_INCREMENT PRIMARY KEY, Year INT, January INT, February INT, March INT, April INT, June INT, July INT, August INT, September INT, October INT, November INT, December INT, Annual Additions(in millions) INT, Average Monthly Additions(in millions) INT) CREATE TABLE lpga_tour_8 (lpga_tour_8_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR)  
SELECT AVG Laps FROM classification WHERE Driver = jackie stewart